Apparatus for cleaning the hulls of vessels.



-E. OTIDYS. v APPARATUS FOR CLEANING THE BULLS 0F YESSELS.

LPILIO ATION IILED NOV. 1, 1907. RENEWED SEPT. 28, 190B.

Patented Apr. 27, '1909.

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E; OTIDYS. APPARATUS ron GLEANINGTHE BULLS or VESSELS. APPLIQATION FILEDNOV. 1, 1907. RENEWED SEPT. 28, 1908. V

Patented Apr. 27, 1909.. e sums-sunn- 2.

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E. OTIDYS. APPARATUS FOR CLEANING THE HULLS 0F VESSELS.

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Patented Apr.'27,' 1909.

QEHHIIIIIIIIIT APPLICATION FILED NOV. 1, 1907. RENEWED SEPT. 28, 1908.

- E. OTIDYS. APPARATUS FOR CLEANING THE HULLS 0F VESSELS. YAP-PLIOATIONFILED NOV. 1, 1907. RENEWED ssrw. 28, mos.

919,939. h v Patented Apr. 27, 1909.

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VEVANGELO orinrs, or LINDSAY, OKLAHOMA.

APPARATUS FOR CLEANING THE HULLS OF VESSELS.

Specification of Letters Patent.

Patented April 27, 1909.

Application filed November 1, 1907, Serial No. 400,303. RenewedSeptember 28,- 1908. Serial No. 455,029.

To all whom it may concern:

Be it known that I, EVANGELO OrInYs, a citizen of the United States,residing at Lindsay, in the county of Garvin, State of Oklahoma, haveinvented new and useful Tm provements in Apparatus for Cleaning theHulls of Vessels, of which the following is a specification.

This invention relates to improvements in apparatus for cleaning thehulls of vessels, and the object is to provide an apparatus by means ofwhich a vessels hull may be cleaned without placing the vessel in adrydock or hauling it out of the water, and one of the principal objectsof the invention is to make it possible to locate the powerinstrumentalities at a convenient fixed point on the deck and to provideconnections with the cleaning or scraping instrumentalities so arrangedthat the power is communicated tothe scraping instrumentalities andsaid'scraping in strumentalities are moved over the surface of the hull.1

Other objects and advantages will appear hereinafter. 7

The invention consists in the combination and arrangement of'parts setforth in the followingspecification and particularly pointed out in theappended claims.

In the drawings: Figure 1 is a plan of a vessel showing my improvedcleaning or scraping apparatus attached thereto. Fig. 2 is a sideelevation of the same. enlarged detail cross sectional elevation takenon line 3+3 of Fig. 2, the portions of the vessel which are notessential to my invention being omitted. Fig. 4 is an enlarged detailelevation of a portion of the stern of the vessel showing the manner ofjoining the two side cables. Fig. 5 is an enlarged end elevation of oneof the movable plates which carries a pair-of sheave wheels. Fig. 6 isan enlarged end elevation of one of the stationary.

plates which carries four sheave wheels. Fig. 7 is an enlarged detailelevation of the cleaning machine, with the cap plates removed. Fig. 8is an end elevation viewed from the left of Fi 7. Fig. 9 is'a sectionalelevation taken online 9+9 of Fig. 7, looking toward the right. Fig. 1018 an enlarged plan section of the mechanism for moving the cleaningmachine along its guides from the water line to the keel. Fig. 11 is adetail sectional elevation taken on line 11-11 of Fig;

x3. 10. Fig. 12 is an enlarged detail plan section of themechanism fortightening the guides,

Fig. 3 is an whereby the cleanin machine is moved into contact with thehu of the vessel. Fig. 13 is a sectional elevation taken on line 1313 ofFig. 12. Fig. 14 is an underneath plan development of the cleaningmachine and its guides, partly broken away to save space. Fig. 15 is adetail sectional elevation of one of the brakes.

In the drawings, is the hull of a vessel having a stem 21, a stern 22,and a deck 23.

Two flexible members 24 24 preferably steel wire cables are located onopposite sides,

respectively, of the hull 20 and are provided on'their forward ends withhooks 25, 25 which are hooked into a plate 26 which may be secured tothe stem 21 by means of set screws or other suitable fastening devices.The members 24 are connected together at the stern 22 by means of aclamp plate27 by means of which said members are secured in such amanner as to be adjustable in relation to each other. Two turn buckles28, 28 are arranged to tighten the members 24, 24. The clamp plate 27 issupported by means of a rope 29 which is secured at one end to saidclamp plate and at its other end may be secured to any convenient pointon the deck of the vessel. Supporting ropes 30 may be arranged atsuitable intervals along the sides of the hull 20 to properly supportthe cables 24., 24..

A cleaning machine 31 is supported on a flexible member 32 whichconsists of two guide ropes 33, 33 preferably steel wire cablesconnected to two triangular frames 34, 34, said frames being. connectedby means of springs 35, '35 to two flexible wire ropes 36, 36,respectively. Two clamp plates 37, 37 may be fastened to the cables 24,24, respectively, in any suitable manner as, for instance, by means ofclamp plates 38, 38 secured thereto by means of screws 39, 39, wherebysaid plates are rigidly clamped to the cables 24, 24 and may be loosenedtherefrom and moved longitudinally thereof from time to time. T I

The ropes 36, 36 pass part way around sheave'wheels 40, 40 journaled onthe plates 37, 37, respectively, said ropes extending thencelongitudinally of the hull 20 and passleading upwardly from the sheavewheels 7 said guide rolls.

41, 41 pass over sheave wheels 44, 44 journaled on the plates 42, 42,respectively, and thence one of said ropes passes to a tighteningmechanism 45, while the other of said ropes is secured to a fixed pointas, for instance, a cleat 46.

I will now proceed to describe the tightener mechanism shown in detailin Figs. 12 and 13. hile the side of the vessel shown in Fig. 2 known asthe starboard side is being cleaned the rope 36 of the starboard side isconnected to a sprocket chain 47 which passes part way around a groovedwheel 48, part way around a sprocket wheel 49, and part way around asecond grooved wheel 50 and thence the free end of said chain may becoiled up on the deck 23. The sprocket wheel 49 is fast to a shaft 51journaled in suitable hearings in frames 52 52 there being a gear 53also fast to said shaft and meshing into a pinion 54 fast to a shaft 55journaled in suitable bearings in the frames 52, 52. The shaft 55 may,if desired, be connected to a suitable source of power or it may havesecured thereto a crank 56 by means of which said shaft may be rotated,whereby rotary motion is communicated to the sprocket wheel 49 and thechain 47 is moved in. the direction of its length and thus the rope 36of the starboard side is stretched taut and the spring 35 is subjectedto a tension so that the cleaning machine 31 is moved into contact withthe hull 20. When the spring 35 is thus placed under tension, saidtension is maintained by means of a double-acting pawl 57 which isadapted to engage the teeth of the gear 53 and thus lock said gearagainst rotation, whereby movement of the chain 47 in the direction ofits length is prevented and the cleaning machine 31 is maintained inproper working contact with the hull 20.

I will now proceed to describe the details of construction of thecleaning machine 31 shown in detail in Figs. 7, 8 and 9. The cleaninmachine 31 has a frame made up of a plura ity of sections comprising acentral section 58 and a plurality of other sections 59, each of saidsections being pivotally connected to the section next adjacent thereto,whereby said frame is made flexible to conform to the curvature of thehull 20 of the vessel. The section 58 and the sections 59 are providedwith wheels 60 journaled on 0 posite ends thereof and arranged to rollin contact with the'surface of the hull 20, there being a plurality ofguide rolls or sheaves 61 journaled on said sections against which theguide ropes 33 are arranged to bear. Brackets 62 constituting bearin sfor the shafts of the wheels 60 and guide ro ls 61 are arranged toprevent the guide ropes 33 from moving out of operative relation withthe grooves of On the sections 59 are mounted a plurality of series ofmotors 63 all identical in construction. The motors 63 may be of anytype suitable for the use of fluid to operate them such as coin n-essedair, steam, or water under pressure. ln practice, I prefer to employcompressed air motors of the niultiple-cylinder type which are connnonlyused for drilling and reaming and such work and which are well known tothose skilled in mechanical arts. The power shafts 64 of the motors 63are slidably arranged in their respective sections 59 so as to be freelymovable in the direction of their length, there being springs 65surrmnnling said shafts, respectively, and interposed between cap plates66 fast to the section 59 and 'nuts 67 having screw-tlireaded engage--ment with said shafts fast to the shafts 64, whereby said springs areadapted to press rotary brushes 68 fast to said shafts against thesurface of the hull 20. The brushes 68 which are shown in the drawingsare merely typical representations of the brushes or scrapers which Iemploy and I do not limit myself to the specific device shown.

By reference to Figs. 8 and 9, it will be. seen that the brushes 68extend. beyond the peripheries of the wheels 69 and it will beunderstood that when the cleaning machine 31 is pressed. against theside of the hull 29, as hereinbefore described, the springs 65 yielduntil the peripheries of said wheels come into contact with the surfaceof said hull, and it will be seen that by reason of the fact that saidbrush-es are thus resiliently mounted they conform to the variouscurvatures of said hull, The motors 63 are connected by supply pipes 69to a supply chamber 70 mounted on the section 58, said supply chamberbeing connected by a main supply pipe 71 to a tank 72 adapted to containwater, air-or steaui under pressure. The supply pipes 69 and 71 are, ofcourse, flexible so that the cleaning machine 31 nJay be easily movedfrom place to place on the hull 29 and so that said machine may conformto the curvature of said hull.

I will now proceed to describe the instrun'ientalities for moving thecleaning waehine 31 longitudinally of the guide ropes 33. ()n the plates37 adjacent to the sheave wheels 40 are located sheave wheels 73, whileon the plates 42 adjacent to the sheave wheels 41 are mounted sheave.wheels 74 and adjacent to the sheave wheels 44 are mounted sheave Wheels75. To the opposite ends of the cleaning machine 31 are fast ropes 76,76 which pass upwardly part way around the sheave wheels 73, thencelongitudinally of the hull 20, part way around the sheave wheels 74, andthence upwardly and part way around the sheave wheels 75. The free endsof the ropes 76, 76 are connected to sprocket chains 77, 77,respectively, which pass part way around sprocket wheels 78, 78,sprocket wheels 79, 79, and sprocket wheels 80, 80. The sprocket wheels79 are loosely mounted 'on a shaft 81 journaled in suitable bearings ina frame 82, while the sprocket wheels 78 are fast to shafts 83, 83,respectively, said shaftsbeing j ournaled in suitable bearings in theframes 82 82 and in like manner the sprocket wheels 80, 80 are fast toshafts 84, 84, respectively, j ournaled in suitable bearings in saidframes.

Gears 85, 85 fast to the shafts 84, 84 fast/to the sprocket wheels 79,79, respectively, and the gears 86, 86 mesh into gears 87, 87 fast tothe shafts 83, 83, respectively. Brake drums 88, 88 fast to the shafts83, 83, respectively, are surrounded by brake bands 89 connected in anyusual or desired manner to brake levers 90, 90, respectively. The shaft81 may be connected to any suitable source of power as, for instance, amotor 91 of the reversible type, whereby said shaft may be rotated ineither direction. A clutch sleeve 92 slidably mounted on the shaft 81 isprovided on its opposite ends with clutch teeth 93 which are.

adapted to engage corres onding teeth 94, 94 formed on the hubs of thegears 86, 86, respectively. A collar 95 located. in an annular groove 96in the sleeve 92 is pivotally connected to a clutch lever 97, said leverbein pivoted at 98. When the clutch lever-and clutch sleeve are in theposition shown in Fig. 10 and the shaft 81 is rotated clockwise (Fig.11) the rope 76 of the port side is hauled by the mechanism and thecleaning machine 31 is moved thereby from the position shown in Fig. 2toward thekeel and when the clutch sleeve 92 is moved into engagementwith the clutch 94 of the opposite side and the shaft 81 is rotatedclockwise (Fi 11) the rope 7 6 of the starboard side is hau ed and'thecleaning machine 31 is moved from the keel toward the water line.

It will be understood that the sleeve 92 while free to slide on theshaft 8lis non-rotatably mounted thereon in any usual or desired manneras by means of a key. In order that the cleaning machine 31 togetherwith its guide ropes 33, 33 may be moved longitudinally of the vessel, Ipreferably provide four ropes 99, 99 connected to the tri angular frames34, 34. On each of the ends of the cleaning machine 31, I providesprings 100 arranged to strike the keel of the vessel and act to cushionthe blow when the machine brings up against the keel.

Having thus specifically described the apparatus, I will now proceed todescribe its general operation. Assuming the arts to be in p0s1tionsshown in Figs. 1 an 2 with the upper end of, the cleaning machine 31 ator near the water line, the rope 76 of the port side is hauled inboundby the mechanism hereinbefore described and shown in Figs. 10and 11 andin order to prevent the rope 76 on the starboard side from paying outtoo fast the operator moves the brake lever 90 to applythe brake band 89which is operatively conwetted area of the vessels hull.

nected to the rope 76 of the starboard side. While the machine 31 isbeing drawn downwardly toward the keel the cleaning brushes 68 arerotated by their respective motors 63 and the barnacles and marinegrowth are thusremoved from the surface of the hull 20. When the machine31 has reached the keel the clamp plates 38, 38 are loosened and movedtoward the bow orv stern of the vessel a distance substantially equal tothe width of the cleaning machine 31. During such movement it is, ofcourse, necessary to slacken the ropes 36 and after the apparatus hasbeen moved to its new position the plates 37 are once more secured tothe cables 24, the rope 36 of the port side is made fast to its cleat 46and the rope 36 of the starboard side is tightened, as hereinbeforedescribed. i

The rope 76 of the starboard side is then hauled inboard and thecleaning machine 31 is drawn from the keel toward the water line and soon the apparatus is moved longitudinally of the vessel and the cleaningmachine is moved to and fro from the water line to the keel thuscleaning practically the entire When it is desired to clean the portside of the vessel the ropes 36, 36 are slackened thus permitting theguide ropes 33, 33 to drop some distance below the keel and the cleaningmachine 31 is then drawn from the starboard side across the keel to theport side and the operation of cleaning the port side is, of course,similar to that described in connection with the starboard side.

Having thus described my invention, what I claim and desire by LettersPatent to se cure is: I

1. In combination with a vessels hull, two devices located on oppositesides, respec tively, of said hull, a flexible member extendingtransversely of said hull therebeneath and connected to said devices,two other devices located on opposite sides, respectively, of said hull,said flexible member extending from said first-nameddevices-longitudinally of said hull and connected tosaid two othermembers, a cleaning device sup ported on the transverse portion of saidflexible member, and means connected to the free ends of said flexiblemember, whereby the same may be subjected to tension and whereby saidcleaning device may be moved into contact with saidv hull.

2. In combination with a vessels hull, two flexible members located onopposite sides, respectively, of said hull and extending longitudinallythereof, two plates secured to said members, respectively, a flexiblemember extending transversely of said hull therebeneath and connected tosaid plates, two other plates secured to said first-named flexiblemembers,respectively, said second-named flexible member extending fromsaid first two plates longitudinally of said hull and connected to saidtWo other plates, cleaning device supported on the transverse portionois id second-named flexible member, and means connected to the free ends01" second-named flexible member, whereby the same may be subjected totension and whereby said clears 1 device may be moved into contact withsaid hull.

3. In combination With vesscls hull, a flexible member extendingtransversely of said hull therebeneath, carriage movable longitudinally,of said member, said carriage made up or" a plurality of flexiblyconnected sections, plurality of rotary scraping devices mounted onsections, respectively, and arranged With their axes substantiallyperpendicular to said hull, and means for rotating said devices.

4 In combination With a vessels hull, a flexible member extendingtransversely of said hull therebeneatl'i, a carriage movablelongitudinally of said member, said carriage made up of a plurality offlexibly connected sections, a plurality o1 rotary scraping devicesmounted on said sections, respectively, and arranged With their axessubstantially perpendicular to said hull, and a plurality of fluidpressure motors connected to said devices, respectively.

5. In combination. with a vessels hull, a flexible member extendinglongitudinally of said hull, a plate l st to said member, a sheave Wheelmounted on said plate, second plate fast to said member, a second heaveWheel mounted on said second plate, a flexible member extendingtransversely of said hull therebeneath passing part Way around saidfirst Wheel, thence extending longitudinally of said hull and passingpart Way around said second sheave Wheel, a clean inn; device supportedon the trans erse portion oi said flexible member, a third sheave wheelmounted on said first plate, a 'fourth sheave Wheel mounted on saidsecond plate, a flexible member fast to said cleaning; device and pass'g; 1 it Way around said third Wheel, thenc extending longitudinally ofsaid hull and passing part Way around said fourth Wheel, and meansconnected to the free end of said third member, whereby said device maybe moved transversely of said hull.

6. ln'combination with a vessels hull, flexible member extending for aportion of its length transversely of said hull there beneath and for aportion of its length longi tudinally of said. hull, the transverseportion of said member constituting a guide, a cleaning device arrany'edto move longitudinally of said transverse portion and adapted to beguided thereby, and a second fl'"-'ible member connected to saidcleaning de ce extending for a portion. of its length transversely ofsaid hull and for a portion of its length longitudinally of said hull.

7. In combination with a vcssels hull, a flexible member extending for aportion of its length transverse of said hull therebeneath and for aortion of its length longituoinally of said hull, the transwxrsc portionoi said member constituting a guide, a cleaning device arranged to movelongitudinally of said transverse portion and adapted to be guidedthereby, a second flexible member connected to s id cleaning deviceextending tor portion ol lbS length transversely of said hull and for aportion oi its length longitudinelly of said hull, and means connectedto said second member, whereby said cleaning device may be movedlongitudinally ol said transverse portion.

8. in combination with a vcssels hull, a flexible member extending: fora portion of its length transversely oi said hull therebeneath and for aportion of its length longitudinally oi said hull, the transverseportion of said member constituting a guide, a cleanin; device arrangedto move longitudinally of said transverse portion and adapted to beguided thereby, a second flexible member connected. to said cleaningdevice extending for a portion of its length transversely of said hulland. for a portion of its length longitu linally ol said hull, meansconnected to said eond member hereby said cleaning device may be movedlongitudinally ol said transverse por 'on, and means connected to said frst member, whereby the same may be subjected to a tension and wherebysaid cleaning; device may be moved into contact with so l hull.

In combination with a vesscls hull, a flexible member extending tor aportion or its length transversely of said hull therebeneath and for aportion of its length longitudinally of said hull, the transverseportion i said member constituting a guide, a cleaning device arrangedto move longitudinally of said transverse portion and adapted to beguided therei; y, a second flexible member coimected to id cleaningdevice extending; for a portion or its length transversely ol' said hulland for portion or its length longitudinally of said hull, and meansconnected to said first member, whereby the some may be subjected to atension and whereby said cleaning device may be moved into contact withsaid hull.

10. in combination with a vcssels hull, tivo pulleys located on one sideof said hull, a flexible member exten d ing for a portion of its lengthtrsnr-o'ersel v o" :aid hull thercbeneath, part vvay around one ol saidpulleys and thence longitudinally of said hull, the transverse portionoi said member constituting a guide, a cleaning derive arranged to movelongitudinally of said transverse portion and adapted to be guidedthereby, and a second flexible member connected to said cleaning deviceextending for a portion oi its length transversely of said hull, partwayaround the other of said pulleys andthence longitudinally of said hull.I I

11. In combination with avessels hull, a flexible member extending for aportion of its length transversely of said hull therebeneath and twoportionsithereof extending longitudinally of said hull on oppositesides, respectively, thereof, the transverse portion of said memberconstituting a guide, a clean ing device arranged to move longitudinallyof said transverse portion and adapted to be guided thereby, and twoflexible members connected to said cleaning device extending for aportion of their lengths transversely of said hull and for a portion oftheir, lengths longitudinally of said hull upon opposite sides,respectively, thereof.

12. In combination with a vessels hull, a flexible member extending fora'portion of its length transversely of said hull therebeneath and twoportions thereof extending longitudinally of said hull on oppositesides, respectively, thereof, the transverse portion of said memberconstituting a guide, a cleaning device arranged to move longitudinallyof said transverse portion and adapted to be guided thereby, twoflexible members connected to said cleaning device extending for aportion of their lengths transversely of said hull and for a portion oftheir lengths longitudinally of said hull upon opposite sides,respectively, thereof, and means connected to said first member, wherebythe same may be subjected to a tension and-whereby said cleaning 1derllice may be moved into contact with said 13. In combination with avessels hull, a flexible member extending for a portion of its lengthtransversely of said hull therebeneath and two portions thereofextending longitudinally of said hull on opposite sides, respectively,thereof, the transverse portion of said member constituting a guide, acleaning device arranged to move longitudinally of said transverseportion and adapted to be guided thereby, two flexible members extendingfor a portion of their lengths transversely of said hull and for aportion of their lengths longitudinally of said hull upon oppositesides, re spectively, thereof, and means connected to said second-namedmembers, whereby said cleaning device may be moved longitudinally ofsaid transverse portion.

14. In combination with a vessels hull, a flexible member extending fora portion of its length transversely of said hull therebeneath and twoportions of its length extending lon gitudinally of said hull onopposite sides, re-

spectively, thereof, the transverse portion of said member constitutingaguide, a cleaning device arranged to move longitudinally of saidtransverse portion and adapted to be guided thereby, two flexiblemembers connected to said cleaning device extending for a portion oftheir lengths transversely of said hull and for a portion of theirlengths longitudinally of said hull on opposite sides, respectively,thereof, means connected to said second-named members, whereby saidcleaning device may be moved longitudinally of said transverse portion,and means connected to said first-named member, whereby the same may besubjected to a tension and whereby said cleaning device may be movedinto contact with said hull.

15. In combination with a vessels hull,

nally of said hull upon opposite sides, respectively, thereof, thetransverse portion of said member constituting a guide, a cleaningdevice arranged to move longitudinally of said transverse portion andadapted to be guided thereby, two other pulleys located on oppositesides, respectively, of said hull, and two flexible members connected tosaid cleaning device extending part way around said second-namedpulleys, respectively, and thence longitudinally of said hull.

16. In combination with a vessels hull, two pulleys located on oppositesides, respectively, of said hull, a flexible member extending for aportion of its length transversely of said hull therebeneath, part wayaround said pulleys and thence longitudinally of said hull upon oppositesides, respectively, thereof, the transverse portion of said memberconstituting a guide, a cleaning device arranged to move longitudinallyof said transverse portion and adapted to be guided thereby, two otherpulleys located on opposite sides, respectively, of said hull, two

flexible members connected to said cleaning device extending part wayaround said second-named pulleys, respectively, and thencelongitudinally of said hull, means connected to said second-namedmembers, whereby said cleaning device may be moved longitudinally ofsaid transverse portion, and means connected to said first named member,whereby the same may be subjected to a tension and whereby said cleaningdevice may be moved into contact with said hull.

17. In combination with a vessels hull, two cables secured to said hullon opposite sides, respectively, thereof, two pulleys sup ported on saidcables, respectively, a flexible member extending for a portion of itslength transversely of said hull therebeneath part way around saidpulleys and thence longitudinally of said hull upon opposite sides,respectively, thereof, the transverse portion of said memberconstituting a guide, a cleaning device arranged'to move longitudinallyof said transverse portion and adapted to be guided thereby, two otherpulleys located on opposite sides, respectively, of said hull, and twoflexible members connected to said cleaning device extending part wayaround said second-named pulleys, respectively, and thencelongitudinally of said hull 18. In combination with a vessels hull, aflexible member extending for a portion of its length transversely ofsaid hull therebeneath and for a portion of its length longitudinally ofsaid hull, the transverse portion of said .member constituting a guide,a cleaning device arranged to move longitudinally of said transverseportion and adapted to be guided thereby, a second flexible memberconnected to said cleaning device extending for a portion of its lengthtransversely of said hull and for a portion of its length longitudinallyof said hull, means connected to said first member, whereby the same maybe subjected to a tension and whereby said device may be moved intocontact with said hull, and a spring interposed between said means andsaid device.

19. In combination with a vessels hull, a pair of substantially parallelflexible members extending transversely oi said hull therebeneath, twoframes to which opposite ends of said members are connected, said framesbeing disposed on opposite sides, respectively, of said hull, a cleaningdevice arranged to move longitudinally of said members and adapted to beguided thereby, a second pair of flexible members connected to saidframes, respectively, said second members extending for a portion oftheir lengths transversely oi said hull and for a portion of theirlengths longitudinally of said hull, and a third member connected tosaid cleaning device extending for a portion of its length transverselyof said hull and for a portion of its length lon itudinally of saidhull.

20. In combination with a vessels hull, a flexible member extendingtransversely of said hull therebeneath and having one fixed end, acleaning device arranged to move lonl gitudinally of said member andadapted to l be guided thereby, a rotatable drum to which said member isconnected and by means of which said device may be moved into eontactwith said hull, means to lock said drum against rotation, a springconnected to said member and interposed between said drum and said fixedend,- and a second flexible member connected to said cleaning device,whereby the same may be moved longitudinally 01' said iirst member.

21. In combination with a vessels hull, a flexible member extending trnsversely ol' said hull therebeneath, a clean device arranged to movelrmgitudinally of said. member and adapted to be guided thereby, asecond flexible member connected to said cleaning device, whereby thesame may be moved longitudinally of said lirst member, a third flexiblemember connected to said cleaning device, and a frictional tensionaldevice acting on said third. member.

22. In combination with a vessel's hull, a carriage comprising aplurality ol' flexibly connected sections, a plurality of rotarycleaning devices mounted on said sections, respectively, with their axessubstantially perpendicular to said hull, and means l'or rotating saiddevices 23. In combination with a vessel's hull, a carriage comprising aplurality of flexibly connected sections, a plurality of rotary cleaningdevices mounted on said sections, respectively, arranged with their axessnbstantially perpendicular to said hull, and a plurality of fluidpressure motors connected to said devices, respectively.

In testimony whereof I have hereunto set my hand in presence of twosubscribing \\'itnesses.

EVAN GE LO illl Y ritnesses.

I VALTER L. PIERCE, Louis A. Jones.

(ill

